Thanks, I will do that. In the meantime it would help me if you could
describe the conditions under which  saying "cursor" provides its value
rather than the cursor object?
2014/9/3 上午8:00 於 "David Nolen" <[email protected]> 寫道:

> I think it will be more fruitful to describe your problem with a
> minimal bit of code completely outside the context of what you are
> working on. As it stands I cannot even see the trouble you are having.
>
> David
>
> On Wed, Sep 3, 2014 at 10:48 AM, Alan Shaw <[email protected]> wrote:
> > OK let me try this:
> >
> > (render [_] (dom/h1 nil (:text app)))
> >
> > App is a cursor but here we are happily getting the :text member of its
> > value by pretending app is the value.
> >
> > (Something something (f app))
> >
> > App is a cursor but here I am not magically given its value.
> >
> > Discuss.
> >
> > 2014/9/3 上午7:41 於 "David Nolen" <[email protected]> 寫道:
> >
> >> Or I simply don't understand the problem or the question :)
> >>
> >> On Wed, Sep 3, 2014 at 10:30 AM, Alan Shaw <[email protected]> wrote:
> >> > Wow you simply have not taken the time to read my question.
> >> >
> >> > 2014/9/3 上午7:28 於 "David Nolen" <[email protected]> 寫道:
> >> >
> >> >> If for some reason you need to snapshot the value of a cursor during
> >> >> render use om.core/value to do that.
> >> >>
> >> >> David
> >> >>
> >> >> On Wed, Sep 3, 2014 at 10:25 AM, Alan Shaw <[email protected]>
> wrote:
> >> >> > Setting local state from app state was not my goal. My goal was to
> >> >> > reflect
> >> >> > the changed app state in the display - not an unreasonable desire.
> If
> >> >> > you
> >> >> > read my question again you'll see that setting local state was only
> >> >> > one
> >> >> > of
> >> >> > three ways I tried to accomplish that.
> >> >> >
> >> >> > Again: I was unable to access the cursor's value during the render
> >> >> > phase
> >> >> > without explicitly saying (.value cursor). Examples in the
> tutorials
> >> >> > show
> >> >> > the cursor's value available by implicit dereferencing:
> >> >> >
> >> >> > (render [_] (dom/h1 nil (:text app)))
> >> >> >
> >> >> > It is my impression that rendering the value requires access to the
> >> >> > value.
> >> >> > But when I refer to this app state in render, I get the cursor
> rather
> >> >> > than
> >> >> > its value.
> >> >> >
> >> >> > I appreciate that breaking Om's rules will lead to trouble. I am
> >> >> > trying
> >> >> > to
> >> >> > play by the rules here but it's not clear what they are.
> >> >> >
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